At Swansea Crown Court, judges staffed the phones to take calls from defendants who could not make it to their hearing, as a number of court staff were unable to attend work.
Mr Clarke said he was about to pilot some "payment by results" contracts in the probation service - already in place in two prisons - and give staff the discretion to work in ways to best reduce the number of crimes committed by people released from prison.
Circle said it wanted to work with the hospital's staff to improve the safety of its services, and to minimise the number of times patients have to travel to the hospital for different appointments.